Instructure Holdings, Inc. (Canva LMS, instructure.com)
shinyhuntersThis record tracks a ransomware attack claimed by the shinyhunters group against Instructure Holdings, Inc. (Canva LMS, instructure.com). It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAPWindow Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.
Attack Summary
Nearly 9,000 schools worldwide affected. 275 million individuals data ranging from students, teachers, and other staff containing PII. Several billions of private messages among students and teachers and students and other students involved, containing personal conversations and other PII. Your Salesforce instance was also breached and a lot more other data is involved. Pay or Leak. This is a final warning to reach out by 6 May 2026 before we leak along with several annoying (digital) problems that'll come your way. Make the right decision, don't be the next headline. | Size: 3.65TB+ (uncompressed) | Updated: 3 May 2026 | Warning: FINAL WARNING PAY OR LEAK
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.